Simmons said in an open letter, “My friends, both Muslims and Jews, are saying there are so many comparisons between your rap and Hitler’s, and I cannot disagree with them, Donald.”

Simmons also added, “You are a generous, kind man who has built a career on negotiating deals where everybody wins. Now, you seem like a one-man wrecking ball willing to destroy our nation’s foundation of freedom.”

The rally also broke out into a Muslim “Allahu Akbar” prayer at one point: